All of them are new records by 2° each. The previous Baltimore record had occurred 3 times in the past: 1966, 1908, 1894.

The Washington morning low of 78°, if it holds through midnight (1 am EDT), would also be a new record high minimum, beating the old record of 77° which has stood since 1874. Given the lack of rainfall so far, that seems like a distinct possibility. The 1874 record is the oldest of only 3 remaining 19th century daily high minimum records for June. A daily high minimum record (76°) has already been set this month on the 21st.

Here are some other high temperature records reported by the National Weather Service so far today (previous records in parentheses):

Original post:The official Washington DC temperature of 99° at 2 pm today has already broken the heat record for June 24 set in 1894 as readings continue to climb. That record was one of only 3 remaining June high temperature records from the 19th century, including the all-time June daily high of 102° on June 9, 1874. (By contrast, 5 daily low temperature records remain from the 19th century. Only one June daily low temperature record has been set since 1979, and that was 18 years ago, on June 22, 1992.)

5 comments:

Steve, I've been wondering how to get the records for our local weather station (Upton, NY, or at least Islip, NY). When I go to NWS it just shows Central Park, which isn't what I was looking for. And even that data seems limited. What's a good source?

And actually the 1971-2000 data seem to be only from 1984 for Islip... But I was hoping for some more detailed data to download and play around with - the actual daily average temperatures, or highs and lows, going back to whenever or something like that. Does anybody post that online these days?